MDCAT Chemistry Chapter 19 Macromolecules Online Test With Answers

MDCAT Chemistry Chapter 19 Macromolecules Online Test

Sr. # Questions Answers Choice
1 Benedict solution gives a positive test with:
 glucose <br> frutose <br> sucrose <br> starch <br>
2 polymerisation of vinyl chloride gives PVC:
How does the carbon-carbon  bond in PVC compare with that in chloroethene?
 longer and stronger <br> fructose <br> sucrose <br> starch <br>
3 one gram of carbohydrate yields energy:
 10kcal <br> 100kcal <br> 4kcal <br> 9kcal <br>
4 A molecule of polysacharide on hydrolysis produces __________of molecules of monosacharide,
 2 - 10<br> 3 &gt;10 2
5 Keratomalacia is caused due to the d3eficiency of vitamin:
 A <br> B K D
6 Which one of the following organic acids is made fork methanol?
 propanoic acid <br> butanoic acid <br> formic acid <br> acetic acid <br>
7 A complete food contains at least:
 three nutrients <br> ten nutrients <br> six nutrients <br> eight nutrients <br>
8 An amino acid exists in the form of Zwitter-ion Which has:
 one - ve charge <br> one + ve charge <br> two + ve carges <br> one + ve and one -ve<br>
9 Which substances do nto react immediately with bromine water:
 ethane <br> benzene <br> ethene <br> phenol <br>
10 Coenzymes are the species which increase the activity of enzymes. They are chemically:
 metal ions <br> none - metals <br> organic acids <br> organic bases <br>
11 Sponification is the hydrolysis of fats or oil with an/a:
 enzyme <br> me5tallic ion <br> acid <br> alkali <br>
12 The optimum PH value fro the enzyme pepsin is:
 10 1.4 2 8
13 Which is the optimum temperature  for the activity of enzyme?
 20 - 35°C<br> 10 -15°C<br> 55 - 70°C<br> 35 - 55°C<br>
14 Starch  is a polymer is of:
 sucrose <br> fructose <br> α-D-Glucose <br> lactose <br>
15 Nylon 6,6 is a condensation polymer of:
 Phthalic acid and hexa ethylene diamine <br> adipic acid and hexaethylene diamine <br> phthalic acid and glycerol <br> phthalic acid and glycerol <br>
16  Which one among the following is not a natural polymer?
 protein <br> cellulose <br> nylon <br> nucleic acid <br>
17 Plastics are a pollution problem because may plastics:
 burn to produce toxic fumes <br> decompose to produce tocxic products <br> are made from petroleum <br> are very inflammable <br>
18 The mechanism of polymerization involves free addition Polymerization or condensation polymerization, Choose the correct statement:
 Polyester is an addition polymer <br> polythene is an addition polymer <br> polyviny chloride (PVC) is a condensation polymer<br> Polystyrene <br>
19 Thermoplastic polymer can be softened and hardened when cool repeatredly, Which one is not a thermoplastic among he following?
 epoxy resin <br> PVC <br> Plastic toys <br> none of all <br>
20 Lipids are naturally occurring compounds produced in cell and are water insoluble but soluble in organic solvent one of the following is not a lipid, Select among the following:
 nucleic acid <br> atriglceride <br> sterol <br> vitamin D<br>
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